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1. 发明授权

US5085495A Multi-screen projector 失效
标题翻译：多屏投影机
公开(公告)号：US5085495A
公开(公告)日：1992-02-04
申请号：US661112
申请日：1991-02-26
申请人： Yoshiaki Iwahara , Masanori Ogino , Masutomi Ohta , Shoji Kuroda , Yuzo Tamura , Yukihiro Kobayashi
发明人： Yoshiaki Iwahara , Masanori Ogino , Masutomi Ohta , Shoji Kuroda , Yuzo Tamura , Yukihiro Kobayashi
IPC分类号： G03B21/02 , G03B21/10 , G03B21/62 , H04N5/74
CPC分类号： G03B21/02 , G03B21/10 , G03B21/625 , H04N9/3147
摘要： A support member for supporting a plurality of vertically-arranged Fresnel sheets is fixedly mounted on a lower end portion of a reinforcing sheet. A hanging mechanism hangs the reinforcement sheet and the Fresnel sheets vertically adjustably. An elongated screen is constituted by a plurality of vertically-arranged unit screens, and the overall screen is constituted by a plurality of elongated screens arranged horizontally. A mechanism for preventing the relative displacement of the opposed edges of the elongated screens from each other in a direction perpendicular to the plane of the elongated screen is provided at an effective projection light-absent region where the light projected from projectors onto the screen is not hindered. A mechanism for limiting the absolute displacement of the elongated screens in a direction perpendicular to the plane of the elongated screen is provided at the right and left edges of the elongated screens and is disposed at the effective projection light-absent region. The limiting mechanism includes a plate member having a buckling load resistance, and pins connecting the opposite ends of the plate member respectively to the elongated screen and a fixed position in such a manner that the elongated screens are free to move vertically. A pillar member is used for fixing the end of the plate member, and a space between a support base supporting the unit projectors and the pillar members is used as a maintenance screen.
摘要翻译：用于支撑多个垂直布置的菲涅耳片的支撑构件固定地安装在加强片的下端部。悬挂机构垂直调节加固片和菲涅耳片。细长的屏幕由多个垂直布置的单元屏幕构成，并且整个屏幕由水平布置的多个细长屏幕构成。用于防止细长屏幕的相对边缘在与细长屏幕的平面垂直的方向上的相对边缘的相对位移的机构设置在有效的投射无光区域，其中从投影仪投射到屏幕上的光不是受阻在细长筛网的右边缘和左边缘处设置用于限制细长筛网在与细长筛网平面垂直的方向上的绝对位移的机构，并且设置在有效投射无光区域。限位机构包括具有抗压负载电阻的板构件，以及将板构件的相对端分别连接到细长屏幕和固定位置的销，使得细长屏幕可自由地垂直移动。柱构件用于固定板构件的端部，并且使用支撑单元投影器的支撑基座和柱构件之间的空间作为维护屏幕。

2. 发明授权

US4384304A Apparatus for receiving multiplex information signal 失效
标题翻译：用于接收复用信息信号的装置
公开(公告)号：US4384304A
公开(公告)日：1983-05-17
申请号：US269509
申请日：1981-06-01
申请人： Masutomi Ohta , Minoru Sakai
发明人： Masutomi Ohta , Minoru Sakai
IPC分类号： H04N7/083 , H04N7/025 , H04N7/03 , H04N7/035 , H04N7/087 , H04N7/088 , H04N7/08
CPC分类号： H04N7/035 , H04N5/44
摘要： A method of and an apparatus for securely and precisely extracting from a received television signal a start pulse signal which is a binary signal provided at the beginning of an information signal multiplexed in the vertical blanking period of the television signal is disclosed. A PLL circuit acting as a frequency multiplier is provided to obtain a multiplied-frequency signal synchronized with a horizontal synchronizing signal (separated from the television signal by a synchronizing separator circuit) and having a frequency N times equal to or higher than a horizontal synchronizing frequency, first and second extracting gate pulses are formed from the multiplied-frequency signal, the start pulse signal is extracted from the received television signal by the first extracting gate pulse, the extracted start pulse signal is made to pass through a filter resonating with the start pulse signal to remove a noise component, a waveform at a central portion of the filtered start pulse signal is extracted by the second extracting gate pulse, and the extracted waveform is produced as a start pulse for bit synchronization of the information signal.
摘要翻译：公开了一种用于从接收到的电视信号中安全且精确地提取起始脉冲信号的方法和装置，该开始脉冲信号是在电视信号的垂直消隐周期中多路复用的信息信号的开始处提供的二进制信号。提供充当倍频器的PLL电路，以获得与水平同步信号（通过同步分离器电路与电视信号分离）同步的并且具有N倍等于或高于水平同步频率的频率的倍频信号，从倍频信号形成第一和第二提取门脉冲，通过第一提取门脉冲从接收到的电视信号中提取起始脉冲信号，提取的起始脉冲信号通过与起始共振的滤波器脉冲信号以去除噪声分量，由滤波的起始脉冲信号的中心部分处的波形由第二提取门脉冲提取，并且提取的波形被产生为用于信息信号的位同步的起始脉冲。

3. 发明授权

US4587521A Code signal generator or detector for video frame code 失效
标题翻译：代码信号发生器或视频帧代码检测器
公开(公告)号：US4587521A
公开(公告)日：1986-05-06
申请号：US559216
申请日：1983-12-08
申请人： Masutomi Ohta , Fumihiro Kawana
发明人： Masutomi Ohta , Fumihiro Kawana
IPC分类号： H04N7/025 , H04N7/03 , H04N7/035 , H04N7/083 , H04N7/087 , H04N7/088 , H04Q9/00 , G06F11/00 , H04N7/00
CPC分类号： H04N7/035
摘要： A code signal detector for detecting a code signal included in signals of a broadcast with characters superimposed in which character signals are superimposed during the vertical blanking line period, said code signal detector comprising one or more shift registers for converting serial data into parallel data, priority encoder elements for detecting the most significant or the least significant bit represented by positive or negative logic level out of parallel data supplied from said shift register, and exclusive-OR gates.
摘要翻译：一种码信号检测器，用于在垂直消隐行周期期间检测包括在其中叠加有字符信号的字符的广播信号中的码信号，所述码信号检测器包括一个或多个用于将串行数据转换成并行数据的移位寄存器，优先级用于检测由所述移位寄存器提供的并行数据中的正或负逻辑电平所表示的最高有效位或最低有效位的编码器元件，以及异或门。

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